Open Access Research Article

Investigation of Microbiologically Influenced Corrosion of Concrete in Sanitary Sewer Pipes and Manholes: Field Surveys and Laboratory Assessment

Received: 20 April 2022;  Published: 30 June 2022;  doi: 10.21926/aeer.2202027


Microbiologically influenced corrosion (MIC) of concrete in sanitary sewer pipe and manholes is the result of dilute sulfuric acid (H2SO4) dissolving the cement matrix. The acid is produced by a complex series of chemical and biochemical reactions. The objectives of this paper are: (1) to review the basic science of the MIC process starting with the [...]

Open Access Original Research

YNCRG Alleviated Hepatic Steatosis in Metabolic Syndrome Model Rats by Improving Lipid Metabolism and Chronic Inflammatory Reaction

Received: 25 October 2021;  Published: 30 June 2022;  doi: 10.21926/obm.icm.2202023


YNCRG is a combination of five traditional Chinese ingredients with medicinal properties. We studied its effects and mechanism of action on a rat model of non-alcoholic fatty liver with metabolic syndrome. Eight-week-old male SHRcp rat(s) and Wister Kyoto (WKY) rats were adaptively fed for one week, after which they were randomly divided into three [...]

Open Access Original Research

Dearomatization of the Kerosene Fraction: Kinetic Studies

Received: 09 January 2022;  Published: 28 June 2022;  doi: 10.21926/cr.2202017


The kinetics of dearomatization of a kerosene fraction processed using a zeolite catalyst (0.9 HZSM-5) at different temperatures (160-200°C), the molar ratio between the aromatic hydrocarbons present in the kerosene fraction and n-decene (1:(0.5-4)), and the reaction time (1-3 h) were studied. Based on the obtained data, a kinetic model for kerosene [...]

Open Access Original Research

First Cytogenomic Characterization of the Murine Testicular Tumor Cell Line I-10

Received: 25 March 2022;  Published: 27 June 2022;  doi: 10.21926/obm.genet.2202159


After being established in 1967, the commercially available murine Leydig cell tumor line I-10 has been used in almost 50 published studies. I-10 has not been characterized, either at the chromosomal/ cytogenetic level or the genetic level, similar to many other murine tumor cell lines. In this study, we performed molecular karyotyping and multicolor [...]

Open Access Research Article

Molecular Genetic Study on VNTR-polymorphism of Two Cytokine Genes Antagonist of the Receptor of Interleukin 1 (rs2234663) and Interleukin 4 (rs8179190) Associated with Dental Caries in Children

Received: 24 December 2021;  Published: 27 June 2022;  doi: 10.21926/obm.genet.2202158


In this study, we investigated VNTR polymorphisms in intron 2 of the IL1RN gene (rs2234663) and intron 3 of the IL4 gene (rs8179190) related to the development of caries in school children (N = 196) with mixed bite dentition from Krasnodarskii Krai. The genotypes A1/A1 and L/L (L-“long” alleles) (rs2234663) provided resistance to the most intensive [...]

Open Access Original Research

Analysis of LoRa Transmission Delay on Dynamic Performance of Standalone DC Microgrids

Received: 18 April 2022;  Published: 26 June 2022;  doi: 10.21926/jept.2202022


One important aspect toward proper and stable functioning of a communication-based controlled microgrid is data transmission. Consequently, an analysis of the effect of data transmission delay is of significance for any chosen communication protocol. This paper focuses on the effect of employing LoRa for data transfer at the secondary control level [...]

Open Access Original Research

Application of the FISH Method for Analyzing Chromosome Segregation Patterns in Preimplantation Embryos from Robertsonian Translocation Carriers

Received: 28 March 2022;  Published: 22 June 2022;  doi: 10.21926/obm.genet.2202157


Robertsonian translocations (RTs) are very common balanced structural chromosome rearrangements in humans. Due to alterations in the chromosome segregation pattern and the formation of unbalanced gametes and embryos, the carriers of RTs have a significant risk of reproductive failure. For over 30 years, fluorescent in situ hybridization (FISH) has been [...]

Open Access Research Article

3D Fe3O4-decorated Nitrogen-doped Graphene Aerogel as a Highly Durable Electrocatalyst for Oxygen Reduction Reactions

Received: 29 April 2022;  Published: 21 June 2022;  doi: 10.21926/cr.2202016


The rational design of efficient electrocatalysts for oxygen reduction reaction (ORR) is the key to developing fuel cells and metal-air batteries. Carbon-supported iron-based materials, as the most promising electrocatalysts for ORR, have drawn much attention as they are cost-effective and exhibit high activity. In this work, a three-dimensional (3D [...]

Open Access Review

Complex Pathology of Cardiac Syncope in Old Patients

Received: 07 February 2022;  Published: 16 June 2022;  doi: 10.21926/obm.geriatr.2202200


Syncope is characterized by a transient and rapid loss of consciousness for a short duration, with full spontaneous recovery within minutes. Syncope causes up to 2% of all emergency medical consultations. The incidence of syncope is similar in men and women, is higher in old patients (slightly higher in old women). The prevalence of syncope is up to [...]

Open Access Original Research

Meeting the Net Zero Emissions Challenge – Alphabet’s Carbon Management Actions and Opportunities

Received: 10 January 2022;  Published: 16 June 2022;  doi: 10.21926/aeer.2202026


The first step in managing an entity’s carbon emissions involves measurement as ‘what gets measured gets managed’ and measurement lies at the heart of carbon management. The study of carbon management is important to all stakeholders as it enables calculation of emissions that can help determine opportunities for emissions reductions to address [...]

Open Access Original Research

Solubility of Dental Ceramics in Electric Fields

Received: 21 April 2022;  Published: 15 June 2022;  doi: 10.21926/rpm.2202012


Combining dental ceramics with other prosthetic metallic restorations might release metal ions, thus affecting the oral tissues of the patients. In this study, we evaluated the electrochemical solubility of various dental ceramics in a galvanic experimental setup in vitro. Smooth and rough feldspathic and zirconium dioxide ceramics (at pH 5.5 and pH [...]

Open Access Review

46,XX/46,XY Chimerism & Human Sexual Development

Received: 23 April 2022;  Published: 15 June 2022;  doi: 10.21926/obm.genet.2202156


The term chimera refers to an organism with cell lines from two or more distinct zygotes. Human chimerism may occur naturally or artificially. Although rare, advancements in genetics and genomics have resulted in the identification of additional natural human chimeras. Three forms of naturally occurring chimerism have been documented in humans: blood [...]

Open Access Original Research

Anti-cancer Drug Susceptibility of Breast Cancer Cells Incubated on Electrospun Polymeric Fiber Substrates

Received: 01 March 2022;  Published: 14 June 2022;  doi: 10.21926/obm.genet.2202155


In this study, we examined the effect of a combination of surface topographies (fiber alignments) and different stiffness of poly(L-lactic acid) (PLLA) substrates on the direct relationship between anti-cancer drug (CDDP) sensitivity for MDA-MB-231 cells and mesenchymal properties under both normal and hypoxic conditions. In addition, we studied the [...]

Open Access Original Research

Cellular Photosynthetic Pigment and Structural Change in Festuca arundinacea (Tall Fescue) after Exposure to Acute and Chronic Chromium and Copper Stress

Received: 11 April 2022;  Published: 14 June 2022;  doi: 10.21926/aeer.2202025


Expanded industrial globalization has resulted in the release of high concentrations of heavy metals into environmental water sources and soils. Phytoremediation may help to remove these heavy metals from contaminated soils. Tall fescue (Festuca arundinacea Shreb.) exhibits phytoremediation potential due to its endurance and high stress tolerances. [...]

Open Access Original Research

Soil Pollution Education: A Broad View of Knowledge on Soil Pollution and Educational Activities for Undergraduate Students

Received: 25 March 2022;  Published: 10 June 2022;  doi: 10.21926/aeer.2202024


Soil pollution is a major challenge for ensuring a healthy environment and for human health. One of the critical points in soil pollution policy is the education and public awareness of the problem caused by soil pollution. Education influences decision-making on soil and water care. It is crucial to spread knowledge to undergraduate and graduate studen [...]

Open Access Interview

An Interview with Dr. Carlo Pedrolli

Received: 01 June 2022;  Published: 09 June 2022;  doi: 10.21926/obm.geriatr.2202199


InterviewAn Interview with Dr. Carlo PedrolliOBM Geriatrics Editorial OfficeLIDSEN Publishing Inc., 2000 Auburn Drive, One Chagrin Highlands, Suite 200, Beachwood, OH, USA; E-Mail: geriatrics@lidsen.comOBM Geriatrics 2022, volume 6, issue 2 doi:10.21926/obm.geriatr.2202199Received: June 01, 2022Accepted: June 02, 2022Published: June 09, 2022

Open Access Research Article

Controller Evaluation for Solar-Latent Thermal Energy Applications

Received: 17 April 2022;  Published: 09 June 2022;  doi: 10.21926/jept.2202021


In this study, the performance of a self-sufficient controller used for a solar-latent heat domestic hot water (DHW) production unit under real-world operating conditions was analyzed. The unit consists of a flat-plate solar collector and a latent heat storage tank. The controller is powered by a small solar panel and governs the charging and dischargin [...]

Open Access Original Research

Improving the Engine Efficiency Using a New Combined Refrigeration Cycle for Low-Temperature Heat Source (Waste Heat Recovery)

Received: 19 April 2022;  Published: 08 June 2022;  doi: 10.21926/jept.2202020


Passenger and commercial internal combustion engines have relatively large dissipated thermal energy sources that can be used for initiating thermodynamic refrigeration cycles at low temperatures while improving engine efficiency. Researchers have focused on combined power-refrigeration cycles in past studies. This paper presents the operation and perfo [...]

Open Access Original Research

Loneliness Among African Migrants Living in Portugal

Received: 23 January 2022;  Published: 08 June 2022;  doi: 10.21926/obm.neurobiol.2202125


This study analyzed the degree of loneliness, as well as acculturation and adaptation factors related to it among African migrants. The study sample consisted of 759 migrants (48.5% females) from four ethnocultural groups (Angolans, Cape Verdeans, Guineans, and Mozambicans) living in Portugal. Participants’ mean age was 37 years, and the mean length [...]

Open Access Original Research

Clinical Significance of Stress, Depression, Anxiety, and Worry Symptom Improvement Following Mindfulness-based Stress Reduction

Received: 12 April 2022;  Published: 07 June 2022;  doi: 10.21926/obm.icm.2202022


Mindfulness-based stress reduction (MBSR) teaches mindfulness meditation to reduce stress, anxiety, depression, and related forms of distress among a variety of patients. Much research has documented statistically significant reductions across a variety of self-report measures following MBSR, but researchers rarely assessed and reported the clinical [...]

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